11 terms

IB Biology Vocab - 2.9 Photosynthesis

Essential vocabulary for the IBO DP Biology course
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Absorption spectrum
range of wavelengths of light that a pigment is able to absorb.
Action spectrum
range of wavelengths of light within which photosynthesis takes place.
Chlorophyll
main photosynthetic pigment of green plants.
Chloroplast
cell organelle that is the site of photosynthesis.
Chromatography
a method of separating and identifying the components of a complex mixture by differential movement through a two-phase system.
Limiting factors
an environmental factor, such as carbon dioxide or light intensity, that controls the process of photosynthesis.
Nanometre
one billionth (10-9) of a metre.
Photolysis of water
chemical decomposition of water induced by light.
Photosynthesis
the production of carbon compounds in cells using light energy.
Rate of photosynthesis
the rate of conversion of carbon dioxide and water to photosynthetic products.
Wavelength
the distance between peaks of a wave of light, which determines its colour.